Answer to Question #303896 in Engineering for Jackass

Question

The system will determine the speed depending ambient temperature. The display should show the current temperature and fan speed. Design a Subsystems where the switchedmode power supply Unit (Analog): This will supply the required DC power for all sub-systems. • • Input: 20 +/- 4 VDC (i.e. 16v <= input voltage <= 24v DC) Output : 5VDC @ 500mA max. • No more than 10% change in voltage over entire range of input voltage and load conditions. The power supply must be REGULATED, ie. the voltage maintained without human intervention. Ripple output voltage of 10% means 4.5v <= output voltage <= 5.5v DC @ 0.5A or 500mA max. • Min. 80% efficiency at full load. • Variable voltage mode: adjust from 0 to 5V. • Short circuit/overcurrent protection. • No SMPS “on-a-chip” solutions. Build from first principles.